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-rw-r--r--db2/db.h796
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diff --git a/db2/db.h b/db2/db.h
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+++ b/db2/db.h
@@ -0,0 +1,796 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ *	Sleepycat Software.  All rights reserved.
+ *
+ *	@(#)db.h.src	10.67 (Sleepycat) 8/25/97
+ */
+
+#ifndef _DB_H_
+#define	_DB_H_
+
+#ifndef __NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <stdio.h>
+#endif
+
+/*
+ * XXX
+ * MacOS: ensure that Metrowerks C makes enumeration types int sized.
+ */
+#ifdef __MWERKS__
+#pragma enumsalwaysint on
+#endif
+
+/*
+ * XXX
+ * Handle function prototypes and the keyword "const".  This steps on name
+ * space that DB doesn't control, but all of the other solutions are worse.
+ */
+#undef	__P
+#if defined(__STDC__) || defined(__cplusplus)
+#define	__P(protos)	protos		/* ANSI C prototypes */
+#else
+#define	const
+#define	__P(protos)	()		/* K&R C preprocessor */
+#endif
+
+/*
+ * !!!
+ * DB needs basic information about specifically sized types.  If they're
+ * not provided by the system, typedef them here.
+ *
+ * We protect them against multiple inclusion using __BIT_TYPES_DEFINED__,
+ * as does BIND and Kerberos, since we don't know for sure what #include
+ * files the user is using.
+ *
+ * !!!
+ * We also provide the standard u_int, u_long etc., if they're not provided
+ * by the system.  This isn't completely necessary, but the example programs
+ * need them.
+ */
+#ifndef	__BIT_TYPES_DEFINED__
+#define	__BIT_TYPES_DEFINED__
+
+
+
+
+
+#endif
+
+
+
+
+
+
+#define	DB_VERSION_MAJOR	2
+#define	DB_VERSION_MINOR	3
+#define	DB_VERSION_PATCH	4
+#define	DB_VERSION_STRING	"Sleepycat Software: DB 2.3.4: (8/20/97)"
+
+typedef	u_int32_t	db_pgno_t;	/* Page number type. */
+typedef	u_int16_t	db_indx_t;	/* Page offset type. */
+#define	DB_MAX_PAGES	0xffffffff	/* >= # of pages in a file */
+
+typedef	u_int32_t	db_recno_t;	/* Record number type. */
+typedef size_t		DB_LOCK;	/* Object returned by lock manager. */
+#define	DB_MAX_RECORDS	0xffffffff	/* >= # of records in a tree */
+
+#define	DB_FILE_ID_LEN		20	/* DB file ID length. */
+
+/* Forward structure declarations, so applications get type checking. */
+struct __db;		typedef struct __db DB;
+#ifdef DB_DBM_HSEARCH
+			typedef struct __db DBM;
+#endif
+struct __db_bt_stat;	typedef struct __db_bt_stat DB_BTREE_STAT;
+struct __db_dbt;	typedef struct __db_dbt DBT;
+struct __db_env;	typedef struct __db_env DB_ENV;
+struct __db_info;	typedef struct __db_info DB_INFO;
+struct __db_lockregion;	typedef struct __db_lockregion DB_LOCKREGION;
+struct __db_lockreq;	typedef struct __db_lockreq DB_LOCKREQ;
+struct __db_locktab;	typedef struct __db_locktab DB_LOCKTAB;
+struct __db_log;	typedef struct __db_log DB_LOG;
+struct __db_lsn;	typedef struct __db_lsn DB_LSN;
+struct __db_mpool;	typedef struct __db_mpool DB_MPOOL;
+struct __db_mpool_fstat;typedef struct __db_mpool_fstat DB_MPOOL_FSTAT;
+struct __db_mpool_stat;	typedef struct __db_mpool_stat DB_MPOOL_STAT;
+struct __db_mpoolfile;	typedef struct __db_mpoolfile DB_MPOOLFILE;
+struct __db_txn;	typedef struct __db_txn DB_TXN;
+struct __db_txn_active;	typedef struct __db_txn_active DB_TXN_ACTIVE;
+struct __db_txn_stat;	typedef struct __db_txn_stat DB_TXN_STAT;
+struct __db_txnmgr;	typedef struct __db_txnmgr DB_TXNMGR;
+struct __db_txnregion;	typedef struct __db_txnregion DB_TXNREGION;
+struct __dbc;		typedef struct __dbc DBC;
+
+/* Key/data structure -- a Data-Base Thang. */
+struct __db_dbt {
+	void	 *data;			/* key/data */
+	u_int32_t size;			/* key/data length */
+	u_int32_t ulen;			/* RO: length of user buffer. */
+	u_int32_t dlen;			/* RO: get/put record length. */
+	u_int32_t doff;			/* RO: get/put record offset. */
+
+#define	DB_DBT_INTERNAL	0x01		/* Perform any mallocs using regular
+					   malloc, not the user's malloc. */
+#define	DB_DBT_MALLOC	0x02		/* Return in allocated memory. */
+#define	DB_DBT_PARTIAL	0x04		/* Partial put/get. */
+#define	DB_DBT_USERMEM	0x08		/* Return in user's memory. */
+	u_int32_t flags;
+};
+
+/*
+ * Database configuration and initialization.
+ */
+ /*
+  * Flags understood by both db_open(3) and db_appinit(3).
+  */
+#define	DB_CREATE		0x00001	/* O_CREAT: create file as necessary. */
+#define	DB_NOMMAP		0x00002	/* Don't mmap underlying file. */
+#define	DB_THREAD		0x00004	/* Free-thread DB package handles. */
+
+/*
+ * Flags understood by db_appinit(3).
+ *
+ * DB_APP_INIT and DB_MUTEXDEBUG are internal only, and not documented.
+ */
+/*				0x00007	   COMMON MASK. */
+#define	DB_APP_INIT		0x00008	/* Appinit called, paths initialized. */
+#define	DB_INIT_LOCK		0x00010	/* Initialize locking. */
+#define	DB_INIT_LOG		0x00020	/* Initialize logging. */
+#define	DB_INIT_MPOOL		0x00040	/* Initialize mpool. */
+#define	DB_INIT_TXN		0x00080	/* Initialize transactions. */
+#define	DB_MPOOL_PRIVATE	0x00100	/* Mpool: private memory pool. */
+#define	DB_MUTEXDEBUG		0x00200	/* Do not get/set mutexes in regions. */
+#define	DB_RECOVER		0x00400	/* Run normal recovery. */
+#define	DB_RECOVER_FATAL	0x00800 /* Run catastrophic recovery. */
+#define	DB_TXN_NOSYNC		0x01000	/* Do not sync log on commit. */
+#define	DB_USE_ENVIRON		0x02000	/* Use the environment. */
+#define	DB_USE_ENVIRON_ROOT	0x04000	/* Use the environment if root. */
+
+/* CURRENTLY UNUSED LOCK FLAGS. */
+#define	DB_TXN_LOCK_2PL		0x00000	/* Two-phase locking. */
+#define	DB_TXN_LOCK_OPTIMISTIC	0x00000	/* Optimistic locking. */
+#define	DB_TXN_LOCK_MASK	0x00000	/* Lock flags mask. */
+
+/* CURRENTLY UNUSED LOG FLAGS. */
+#define	DB_TXN_LOG_REDO		0x00000	/* Redo-only logging. */
+#define	DB_TXN_LOG_UNDO		0x00000	/* Undo-only logging. */
+#define	DB_TXN_LOG_UNDOREDO	0x00000	/* Undo/redo write-ahead logging. */
+#define	DB_TXN_LOG_MASK		0x00000	/* Log flags mask. */
+
+/*
+ * Flags understood by db_open(3).
+ *
+ * DB_EXCL and DB_TEMPORARY are internal only, and not documented.
+ * DB_SEQUENTIAL is currently internal, but likely to be exported some day.
+ */
+/*				0x00007	   COMMON MASK. */
+/*				0x07fff	   ALREADY USED. */
+#define	DB_EXCL			0x08000	/* O_EXCL: exclusive open. */
+#define	DB_RDONLY		0x10000	/* O_RDONLY: read-only. */
+#define	DB_SEQUENTIAL		0x20000	/* Indicate sequential access. */
+#define	DB_TEMPORARY		0x40000	/* Remove on last close. */
+#define	DB_TRUNCATE		0x80000	/* O_TRUNCATE: replace existing DB. */
+
+/*
+ * Deadlock detector modes; used in the DBENV structure to configure the
+ * locking subsystem.
+ */
+#define	DB_LOCK_NORUN		0x0
+#define	DB_LOCK_DEFAULT		0x1
+#define	DB_LOCK_OLDEST		0x2
+#define	DB_LOCK_RANDOM		0x3
+#define	DB_LOCK_YOUNGEST	0x4
+
+struct __db_env {
+	int		 db_lorder;	/* Byte order. */
+
+					/* Error message callback. */
+	void (*db_errcall) __P((const char *, char *));
+	FILE		*db_errfile;	/* Error message file stream. */
+	const char	*db_errpfx;	/* Error message prefix. */
+	int		 db_verbose;	/* Generate debugging messages. */
+
+	/* User paths. */
+	char		*db_home;	/* Database home. */
+	char		*db_log_dir;	/* Database log file directory. */
+	char		*db_tmp_dir;	/* Database tmp file directory. */
+
+	char	       **db_data_dir;	/* Database data file directories. */
+	int		 data_cnt;	/* Database data file slots. */
+	int		 data_next;	/* Next Database data file slot. */
+
+	/* Locking. */
+	DB_LOCKTAB	*lk_info;	/* Return from lock_open(). */
+	u_int8_t	*lk_conflicts;	/* Two dimensional conflict matrix. */
+	int		 lk_modes;	/* Number of lock modes in table. */
+	unsigned int	 lk_max;	/* Maximum number of locks. */
+	u_int32_t	 lk_detect;	/* Deadlock detect on every conflict. */
+	int (*db_yield) __P((void));	/* Yield function for threads. */
+
+	/* Logging. */
+	DB_LOG		*lg_info;	/* Return from log_open(). */
+	u_int32_t	 lg_max;	/* Maximum file size. */
+
+	/* Memory pool. */
+	DB_MPOOL	*mp_info;	/* Return from memp_open(). */
+	size_t		 mp_mmapsize;	/* Maximum file size for mmap. */
+	size_t		 mp_size;	/* Bytes in the mpool cache. */
+
+	/* Transactions. */
+	DB_TXNMGR	*tx_info;	/* Return from txn_open(). */
+	unsigned int	 tx_max;	/* Maximum number of transactions. */
+	int (*tx_recover)		/* Dispatch function for recovery. */
+	    __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+
+	u_int32_t	 flags;		/* Flags. */
+};
+
+/*******************************************************
+ * Access methods.
+ *******************************************************/
+typedef enum {
+	DB_BTREE=1,			/* B+tree. */
+	DB_HASH,			/* Extended Linear Hashing. */
+	DB_RECNO,			/* Fixed and variable-length records. */
+	DB_UNKNOWN			/* Figure it out on open. */
+} DBTYPE;
+
+#define	DB_BTREEVERSION	6		/* Current btree version. */
+#define	DB_BTREEOLDVER	6		/* Oldest btree version supported. */
+#define	DB_BTREEMAGIC	0x053162
+
+#define	DB_HASHVERSION	5		/* Current hash version. */
+#define	DB_HASHOLDVER	4		/* Oldest hash version supported. */
+#define	DB_HASHMAGIC	0x061561
+
+#define	DB_LOGVERSION	2		/* Current log version. */
+#define	DB_LOGOLDVER	2		/* Oldest log version supported. */
+#define	DB_LOGMAGIC	0x040988
+
+struct __db_info {
+	int		 db_lorder;	/* Byte order. */
+	size_t		 db_cachesize;	/* Underlying cache size. */
+	size_t		 db_pagesize;	/* Underlying page size. */
+
+					/* Local heap allocation. */
+	void *(*db_malloc) __P((size_t));
+
+	/* Btree access method. */
+	int		 bt_maxkey;	/* Maximum keys per page. */
+	int		 bt_minkey;	/* Minimum keys per page. */
+	int (*bt_compare)		/* Comparison function. */
+	    __P((const DBT *, const DBT *));
+	size_t (*bt_prefix)		/* Prefix function. */
+	    __P((const DBT *, const DBT *));
+
+	/* Hash access method. */
+	unsigned int	 h_ffactor;	/* Fill factor. */
+	unsigned int	 h_nelem;	/* Number of elements. */
+	u_int32_t	(*h_hash)	/* Hash function. */
+	    __P((const void *, u_int32_t));
+
+	/* Recno access method. */
+	int		 re_pad;	/* Fixed-length padding byte. */
+	int		 re_delim;	/* Variable-length delimiting byte. */
+	u_int32_t	 re_len;	/* Length for fixed-length records. */
+	char		*re_source;	/* Source file name. */
+
+#define	DB_DELIMITER		0x0001	/* Recno: re_delim set. */
+#define	DB_DUP			0x0002	/* Btree, Hash: duplicate keys. */
+#define	DB_FIXEDLEN		0x0004	/* Recno: fixed-length records. */
+#define	DB_PAD			0x0008	/* Recno: re_pad set. */
+#define	DB_RECNUM		0x0010	/* Btree: record numbers. */
+#define	DB_RENUMBER		0x0020	/* Recno: renumber on insert/delete. */
+#define	DB_SNAPSHOT		0x0040	/* Recno: snapshot the input. */
+	u_int32_t	 flags;
+};
+
+/*
+ * DB access method and cursor operation codes.  These are implemented as
+ * bit fields for future flexibility, but currently only a single one may
+ * be specified to any function.
+ */
+#define	DB_AFTER	0x000001	/* c_put() */
+#define	DB_APPEND	0x000002	/* put() */
+#define	DB_BEFORE	0x000004	/* c_put() */
+#define	DB_CHECKPOINT	0x000008	/* log_put(), log_get() */
+#define	DB_CURRENT	0x000010	/* c_get(), c_put(), log_get() */
+#define	DB_FIRST	0x000020	/* c_get(), log_get() */
+#define	DB_FLUSH	0x000040	/* log_put() */
+#define	DB_GET_RECNO	0x000080	/* c_get() */
+#define	DB_KEYFIRST	0x000100	/* c_put() */
+#define	DB_KEYLAST	0x000200	/* c_put() */
+#define	DB_LAST		0x000400	/* c_get(), log_get() */
+#define	DB_NEXT		0x000800	/* c_get(), log_get() */
+#define	DB_NOOVERWRITE	0x001000	/* put() */
+#define	DB_NOSYNC	0x002000	/* close() */
+#define	DB_PREV		0x004000	/* c_get(), log_get() */
+#define	DB_RECORDCOUNT	0x008000	/* stat() */
+#define	DB_SET		0x010000	/* c_get(), log_get() */
+#define	DB_SET_RANGE	0x020000	/* c_get() */
+#define	DB_SET_RECNO	0x040000	/* get(), c_get() */
+
+/* DB (user visible) error return codes. */
+#define	DB_INCOMPLETE		( -1)	/* Sync didn't finish. */
+#define	DB_KEYEMPTY		( -2)	/* The key/data pair was deleted or
+					   was never created by the user. */
+#define	DB_KEYEXIST		( -3)	/* The key/data pair already exists. */
+#define	DB_LOCK_DEADLOCK	( -4)	/* Locker killed to resolve deadlock. */
+#define	DB_LOCK_NOTGRANTED	( -5)	/* Lock unavailable, no-wait set. */
+#define	DB_LOCK_NOTHELD		( -6)	/* Lock not held by locker. */
+#define	DB_NOTFOUND		( -7)	/* Key/data pair not found (EOF). */
+
+/* DB (private) error return codes. */
+#define	DB_DELETED		( -8)	/* Recovery file marked deleted. */
+#define	DB_NEEDSPLIT		( -9)	/* Page needs to be split. */
+#define	DB_REGISTERED		(-10)	/* Entry was previously registered. */
+#define	DB_SWAPBYTES		(-11)	/* Database needs byte swapping. */
+
+struct __db_ilock {			/* Internal DB access method lock. */
+	db_pgno_t	pgno;		/* Page being locked. */
+					/* File id. */
+	u_int8_t	fileid[DB_FILE_ID_LEN];
+};
+
+/* DB access method description structure. */
+struct __db {
+	void	*mutex;			/* Synchronization for free threading */
+	DBTYPE	 type;			/* DB access method. */
+	DB_ENV	*dbenv;			/* DB_ENV structure. */
+	DB_ENV	*mp_dbenv;		/* DB_ENV for local mpool creation. */
+
+	DB	*master;		/* Original DB created by db_open. */
+	void	*internal;		/* Access method private. */
+
+	DB_MPOOL	*mp;		/* The access method's mpool. */
+	DB_MPOOLFILE	*mpf;		/* The access method's mpool file. */
+
+	/*
+	 * XXX
+	 * Explicit representations of structures in queue.h.
+	 *
+	 * TAILQ_HEAD(curs_queue, __dbc);
+	 */
+	struct {
+		struct __dbc *tqh_first;
+		struct __dbc **tqh_last;
+	} curs_queue;
+
+	/*
+	 * XXX
+	 * Explicit representations of structures in queue.h.
+	 *
+	 * LIST_HEAD(handleq, __db);
+	 * LIST_ENTRY(__db);
+	 */
+	struct {
+		struct __db *lh_first;
+	} handleq;			/* List of handles for this DB. */
+	struct {
+		struct __db *le_next;
+		struct __db **le_prev;
+	} links;			/* Links for the handle list. */
+
+	u_int32_t log_fileid;		/* Logging file id. */
+
+	DB_TXN	 *txn;			/* Current transaction. */
+	u_int32_t locker;		/* Default process' locker id. */
+	DBT	  lock_dbt;		/* DBT referencing lock. */
+	struct __db_ilock lock;		/* Lock. */
+
+	size_t	  pgsize;		/* Logical page size of file. */
+
+					/* Local heap allocation. */
+	void *(*db_malloc) __P((size_t));
+
+					/* Functions. */
+	int (*close)	__P((DB *, int));
+	int (*cursor)	__P((DB *, DB_TXN *, DBC **));
+	int (*del)	__P((DB *, DB_TXN *, DBT *, int));
+	int (*fd)	__P((DB *, int *));
+	int (*get)	__P((DB *, DB_TXN *, DBT *, DBT *, int));
+	int (*put)	__P((DB *, DB_TXN *, DBT *, DBT *, int));
+	int (*stat)	__P((DB *, void *, void *(*)(size_t), int));
+	int (*sync)	__P((DB *, int));
+
+#define	DB_AM_DUP	0x000001	/* DB_DUP (internal). */
+#define	DB_AM_INMEM	0x000002	/* In-memory; no sync on close. */
+#define	DB_AM_LOCKING	0x000004	/* Perform locking. */
+#define	DB_AM_LOGGING	0x000008	/* Perform logging. */
+#define	DB_AM_MLOCAL	0x000010	/* Database memory pool is local. */
+#define	DB_AM_PGDEF	0x000020	/* Page size was defaulted. */
+#define	DB_AM_RDONLY	0x000040	/* Database is readonly. */
+#define	DB_AM_RECOVER	0x000080	/* In recovery (do not log or lock). */
+#define	DB_AM_SWAP	0x000100	/* Pages need to be byte-swapped. */
+#define	DB_AM_THREAD	0x000200	/* DB is multi-threaded. */
+#define	DB_BT_RECNUM	0x000400	/* DB_RECNUM (internal) */
+#define	DB_HS_DIRTYMETA 0x000800	/* Hash: Metadata page modified. */
+#define	DB_RE_DELIMITER	0x001000	/* DB_DELIMITER (internal). */
+#define	DB_RE_FIXEDLEN	0x002000	/* DB_FIXEDLEN (internal). */
+#define	DB_RE_PAD	0x004000	/* DB_PAD (internal). */
+#define	DB_RE_RENUMBER	0x008000	/* DB_RENUMBER (internal). */
+#define	DB_RE_SNAPSHOT	0x010000	/* DB_SNAPSHOT (internal). */
+
+	u_int32_t flags;
+};
+
+/* Cursor description structure. */
+struct __dbc {
+	DB *dbp;			/* Related DB access method. */
+	DB_TXN	 *txn;			/* Associated transaction. */
+
+	/*
+	 * XXX
+	 * Explicit representations of structures in queue.h.
+	 *
+	 * TAILQ_ENTRY(__dbc);
+	 */
+	struct {
+		struct __dbc *tqe_next;
+		struct __dbc **tqe_prev;
+	} links;
+
+	void	 *internal;		/* Access method private. */
+
+	int (*c_close)	__P((DBC *));
+	int (*c_del)	__P((DBC *, int));
+	int (*c_get)	__P((DBC *, DBT *, DBT *, int));
+	int (*c_put)	__P((DBC *, DBT *, DBT *, int));
+};
+
+/* Btree/recno statistics structure. */
+struct __db_bt_stat {
+	u_int32_t bt_flags;		/* Open flags. */
+	u_int32_t bt_maxkey;		/* Maxkey value. */
+	u_int32_t bt_minkey;		/* Minkey value. */
+	u_int32_t bt_re_len;		/* Fixed-length record length. */
+	u_int32_t bt_re_pad;		/* Fixed-length record pad. */
+	u_int32_t bt_pagesize;		/* Page size. */
+	u_int32_t bt_levels;		/* Tree levels. */
+	u_int32_t bt_nrecs;		/* Number of records. */
+	u_int32_t bt_int_pg;		/* Internal pages. */
+	u_int32_t bt_leaf_pg;		/* Leaf pages. */
+	u_int32_t bt_dup_pg;		/* Duplicate pages. */
+	u_int32_t bt_over_pg;		/* Overflow pages. */
+	u_int32_t bt_free;		/* Pages on the free list. */
+	u_int32_t bt_freed;		/* Pages freed for reuse. */
+	u_int32_t bt_int_pgfree;	/* Bytes free in internal pages. */
+	u_int32_t bt_leaf_pgfree;	/* Bytes free in leaf pages. */
+	u_int32_t bt_dup_pgfree;	/* Bytes free in duplicate pages. */
+	u_int32_t bt_over_pgfree;	/* Bytes free in overflow pages. */
+	u_int32_t bt_pfxsaved;		/* Bytes saved by prefix compression. */
+	u_int32_t bt_split;		/* Total number of splits. */
+	u_int32_t bt_rootsplit;		/* Root page splits. */
+	u_int32_t bt_fastsplit;		/* Fast splits. */
+	u_int32_t bt_added;		/* Items added. */
+	u_int32_t bt_deleted;		/* Items deleted. */
+	u_int32_t bt_get;		/* Items retrieved. */
+	u_int32_t bt_cache_hit;		/* Hits in fast-insert code. */
+	u_int32_t bt_cache_miss;	/* Misses in fast-insert code. */
+};
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int   db_appinit __P((const char *, char * const *, DB_ENV *, int));
+int   db_appexit __P((DB_ENV *));
+int   db_open __P((const char *, DBTYPE, int, int, DB_ENV *, DB_INFO *, DB **));
+const char *db_version __P((int *, int *, int *));
+#if defined(__cplusplus)
+};
+#endif
+
+/*******************************************************
+ * Locking
+ *******************************************************/
+#define	DB_LOCKVERSION	1
+#define	DB_LOCKMAGIC	0x090193
+
+/* Flag values for lock_vec(). */
+#define	DB_LOCK_NOWAIT		0x01	/* Don't wait on unavailable lock. */
+
+/* Flag values for lock_detect(). */
+#define	DB_LOCK_CONFLICT	0x01	/* Run on any conflict. */
+
+/* Request types. */
+typedef enum {
+	DB_LOCK_DUMP,			/* Display held locks. */
+	DB_LOCK_GET,			/* Get the lock. */
+	DB_LOCK_PUT,			/* Release the lock. */
+	DB_LOCK_PUT_ALL,		/* Release locker's locks. */
+	DB_LOCK_PUT_OBJ			/* Release locker's locks on obj. */
+} db_lockop_t;
+
+/* Simple R/W lock modes and for multi-granularity intention locking. */
+typedef enum {
+	DB_LOCK_NG=0,			/* Not granted. */
+	DB_LOCK_READ,			/* Shared/read. */
+	DB_LOCK_WRITE,			/* Exclusive/write. */
+	DB_LOCK_IREAD,			/* Intent to share/read. */
+	DB_LOCK_IWRITE,			/* Intent exclusive/write. */
+	DB_LOCK_IWR			/* Intent to read and write. */
+} db_lockmode_t;
+
+/* Lock request structure. */
+struct __db_lockreq {
+	db_lockop_t	 op;		/* Operation. */
+	db_lockmode_t	 mode;		/* Requested mode. */
+	u_int32_t	 locker;	/* Locker identity. */
+	DBT		*obj;		/* Object being locked. */
+	DB_LOCK		 lock;		/* Lock returned. */
+};
+
+/*
+ * Commonly used conflict matrices.
+ *
+ * Standard Read/Write (or exclusive/shared) locks.
+ */
+#define	DB_LOCK_RW_N	3
+extern const u_int8_t db_rw_conflicts[];
+
+/* Multi-granularity locking. */
+#define	DB_LOCK_RIW_N	6
+extern const u_int8_t db_riw_conflicts[];
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int	  lock_close __P((DB_LOCKTAB *));
+int	  lock_detect __P((DB_LOCKTAB *, int, u_int32_t));
+int	  lock_get __P((DB_LOCKTAB *,
+	    u_int32_t, int, const DBT *, db_lockmode_t, DB_LOCK *));
+int	  lock_id __P((DB_LOCKTAB *, u_int32_t *));
+int	  lock_open __P((const char *, int, int, DB_ENV *, DB_LOCKTAB **));
+int	  lock_put __P((DB_LOCKTAB *, DB_LOCK));
+int	  lock_unlink __P((const char *, int, DB_ENV *));
+int	  lock_vec __P((DB_LOCKTAB *,
+	    u_int32_t, int, DB_LOCKREQ *, int, DB_LOCKREQ **));
+#if defined(__cplusplus)
+};
+#endif
+
+/*******************************************************
+ * Logging.
+ *******************************************************/
+/* Flag values for log_archive(). */
+#define	DB_ARCH_ABS		0x001	/* Absolute pathnames. */
+#define	DB_ARCH_DATA		0x002	/* Data files. */
+#define	DB_ARCH_LOG		0x004	/* Log files. */
+
+/*
+ * A DB_LSN has two parts, a fileid which identifies a specific file, and an
+ * offset within that file.  The fileid is an unsigned 4-byte quantity that
+ * uniquely identifies a file within the log directory -- currently a simple
+ * counter inside the log.  The offset is also an unsigned 4-byte value.  The
+ * log manager guarantees the offset is never more than 4 bytes by switching
+ * to a new log file before the maximum length imposed by an unsigned 4-byte
+ * offset is reached.
+ */
+struct __db_lsn {
+	u_int32_t	file;		/* File ID. */
+	u_int32_t	offset;		/* File offset. */
+};
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int	 log_archive __P((DB_LOG *, char **[], int, void *(*)(size_t)));
+int	 log_close __P((DB_LOG *));
+int	 log_compare __P((const DB_LSN *, const DB_LSN *));
+int	 log_file __P((DB_LOG *, const DB_LSN *, char *, size_t));
+int	 log_flush __P((DB_LOG *, const DB_LSN *));
+int	 log_get __P((DB_LOG *, DB_LSN *, DBT *, int));
+int	 log_open __P((const char *, int, int, DB_ENV *, DB_LOG **));
+int	 log_put __P((DB_LOG *, DB_LSN *, const DBT *, int));
+int	 log_register __P((DB_LOG *, DB *, const char *, DBTYPE, u_int32_t *));
+int	 log_unlink __P((const char *, int, DB_ENV *));
+int	 log_unregister __P((DB_LOG *, u_int32_t));
+#if defined(__cplusplus)
+};
+#endif
+
+/*******************************************************
+ * Mpool
+ *******************************************************/
+/* Flag values for memp_fget(). */
+#define	DB_MPOOL_CREATE		0x001	/* Create a page. */
+#define	DB_MPOOL_LAST		0x002	/* Return the last page. */
+#define	DB_MPOOL_NEW		0x004	/* Create a new page. */
+
+/* Flag values for memp_fput(), memp_fset(). */
+#define	DB_MPOOL_CLEAN		0x001	/* Clear modified bit. */
+#define	DB_MPOOL_DIRTY		0x002	/* Page is modified. */
+#define	DB_MPOOL_DISCARD	0x004	/* Don't cache the page. */
+
+/* Mpool statistics structure. */
+struct __db_mpool_stat {
+	size_t st_cachesize;		/* Cache size. */
+	unsigned long st_cache_hit;	/* Pages found in the cache. */
+	unsigned long st_cache_miss;	/* Pages not found in the cache. */
+	unsigned long st_map;		/* Pages from mapped files. */
+	unsigned long st_page_create;	/* Pages created in the cache. */
+	unsigned long st_page_in;	/* Pages read in. */
+	unsigned long st_page_out;	/* Pages written out. */
+	unsigned long st_ro_evict;	/* Read-only pages evicted. */
+	unsigned long st_rw_evict;	/* Read-write pages evicted. */
+	unsigned long st_hash_buckets;	/* Number of hash buckets. */
+	unsigned long st_hash_searches;	/* Total hash chain searches. */
+	unsigned long st_hash_longest;	/* Longest hash chain searched. */
+	unsigned long st_hash_examined;	/* Total hash entries searched. */
+};
+
+/* Mpool file statistics structure. */
+struct __db_mpool_fstat {
+	char *file_name;		/* File name. */
+	size_t st_pagesize;		/* Page size. */
+	unsigned long st_cache_hit;	/* Pages found in the cache. */
+	unsigned long st_cache_miss;	/* Pages not found in the cache. */
+	unsigned long st_map;		/* Pages from mapped files. */
+	unsigned long st_page_create;	/* Pages created in the cache. */
+	unsigned long st_page_in;	/* Pages read in. */
+	unsigned long st_page_out;	/* Pages written out. */
+};
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int	memp_close __P((DB_MPOOL *));
+int	memp_fclose __P((DB_MPOOLFILE *));
+int	memp_fget __P((DB_MPOOLFILE *, db_pgno_t *, unsigned long, void *));
+int	memp_fopen __P((DB_MPOOL *, const char *,
+	    int, int, int, size_t, int, DBT *, u_int8_t *, DB_MPOOLFILE **));
+int	memp_fput __P((DB_MPOOLFILE *, void *, unsigned long));
+int	memp_fset __P((DB_MPOOLFILE *, void *, unsigned long));
+int	memp_fsync __P((DB_MPOOLFILE *));
+int	memp_open __P((const char *, int, int, DB_ENV *, DB_MPOOL **));
+int	memp_register __P((DB_MPOOL *, int,
+	    int (*)(db_pgno_t, void *, DBT *),
+	    int (*)(db_pgno_t, void *, DBT *)));
+int	memp_stat __P((DB_MPOOL *,
+	    DB_MPOOL_STAT **, DB_MPOOL_FSTAT ***, void *(*)(size_t)));
+int	memp_sync __P((DB_MPOOL *, DB_LSN *));
+int	memp_unlink __P((const char *, int, DB_ENV *));
+#if defined(__cplusplus)
+};
+#endif
+
+/*******************************************************
+ * Transactions.
+ *******************************************************/
+#define	DB_TXNVERSION	1
+#define	DB_TXNMAGIC	0x041593
+
+/* Operations values to the tx_recover() function. */
+#define	DB_TXN_BACKWARD_ROLL	1	/* Read the log backwards. */
+#define	DB_TXN_FORWARD_ROLL	2	/* Read the log forwards. */
+#define	DB_TXN_OPENFILES	3	/* Read for open files. */
+#define	DB_TXN_REDO		4	/* Redo the operation. */
+#define	DB_TXN_UNDO		5	/* Undo the operation. */
+
+/* Internal transaction status values. */
+
+/* Transaction statistics structure. */
+struct __db_txn_active {
+	u_int32_t	txnid;		/* Transaction ID */
+	DB_LSN		lsn;		/* Lsn of the begin record */
+};
+
+struct __db_txn_stat {
+	DB_LSN		st_last_ckp;	/* lsn of the last checkpoint */
+	DB_LSN		st_pending_ckp;	/* last checkpoint did not finish */
+	time_t		st_time_ckp;	/* time of last checkpoint */
+	u_int32_t	st_last_txnid;	/* last transaction id given out */
+	u_int32_t	st_maxtxns;	/* maximum number of active txns */
+	u_int32_t	st_naborts;	/* number of aborted transactions */
+	u_int32_t	st_nbegins;	/* number of begun transactions */
+	u_int32_t	st_ncommits;	/* number of committed transactions */
+	u_int32_t	st_nactive;	/* number of active transactions */
+	DB_TXN_ACTIVE	*st_txnarray;	/* array of active transactions */
+};
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int	  txn_abort __P((DB_TXN *));
+int	  txn_begin __P((DB_TXNMGR *, DB_TXN *, DB_TXN **));
+int	  txn_checkpoint __P((const DB_TXNMGR *, long, long));
+int	  txn_commit __P((DB_TXN *));
+int	  txn_close __P((DB_TXNMGR *));
+u_int32_t txn_id __P((DB_TXN *));
+int	  txn_open __P((const char *, int, int, DB_ENV *, DB_TXNMGR **));
+int	  txn_prepare __P((DB_TXN *));
+int	  txn_stat __P((DB_TXNMGR *, DB_TXN_STAT **, void *(*)(size_t)));
+int	  txn_unlink __P((const char *, int, DB_ENV *));
+#if defined(__cplusplus)
+};
+#endif
+
+#ifdef DB_DBM_HSEARCH
+/*******************************************************
+ * Dbm/Ndbm historic interfaces.
+ *******************************************************/
+#define	DBM_INSERT	0		/* Flags to dbm_store(). */
+#define	DBM_REPLACE	1
+
+/*
+ * The db(3) support for ndbm(3) always appends this suffix to the
+ * file name to avoid overwriting the user's original database.
+ */
+#define	DBM_SUFFIX	".db"
+
+typedef struct {
+	char *dptr;
+	int dsize;
+} datum;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int	 dbminit __P((char *));
+#if !defined(__cplusplus)
+int	 delete __P((datum));
+#endif
+datum	 fetch __P((datum));
+datum	 firstkey __P((void));
+datum	 nextkey __P((datum));
+int	 store __P((datum, datum));
+
+/*
+ * !!!
+ * Don't prototype:
+ *
+ *	 dbm_clearerr(DBM *db);
+ *	 dbm_dirfno(DBM *db);
+ *	 dbm_error(DBM *db);
+ *	 dbm_pagfno(DBM *db);
+ *	 dbm_rdonly(DBM *db);
+ *
+ * they weren't documented and were historically implemented as #define's.
+ */
+void	 dbm_close __P((DBM *));
+int	 dbm_delete __P((DBM *, datum));
+datum	 dbm_fetch __P((DBM *, datum));
+datum	 dbm_firstkey __P((DBM *));
+long	 dbm_forder __P((DBM *, datum));
+datum	 dbm_nextkey __P((DBM *));
+DBM	*dbm_open __P((const char *, int, int));
+int	 dbm_store __P((DBM *, datum, datum, int));
+#if defined(__cplusplus)
+};
+#endif
+
+/*******************************************************
+ * Hsearch historic interface.
+ *******************************************************/
+typedef enum {
+	FIND, ENTER
+} ACTION;
+
+typedef struct entry {
+	char *key;
+	void *data;
+} ENTRY;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+int	 hcreate __P((unsigned int));
+void	 hdestroy __P((void));
+ENTRY	*hsearch __P((ENTRY, ACTION));
+#if defined(__cplusplus)
+};
+#endif
+#endif /* DB_DBM_HSEARCH */
+
+/*
+ * XXX
+ * MacOS: Reset Metrowerks C enum sizes.
+ */
+#ifdef __MWERKS__
+#pragma enumsalwaysint reset
+#endif
+#endif /* !_DB_H_ */